Enable checkstyle rule for JLS modifier order

JLS specifies a preferred order for modifiers in
declarations.  Enabled this rule and fixed the
problems that it encountered.

Change-Id: I5e8fa3d29f785ced4c61fbb8c7c8b168289f06e2
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java b/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
index e78be58..ca631e1 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
@@ -108,7 +108,7 @@
      *                   otherwise delete the provided object.
      * @return a new Kryo object if needed, otherwise null.
      */
-    synchronized private Kryo newDeleteKryo(Kryo deleteKryo) {
+    private synchronized Kryo newDeleteKryo(Kryo deleteKryo) {
         if (deleteKryo != null) {
             // Delete an entry by moving it back to the buffer
             kryoList.add(deleteKryo);